<template>

  <el-form ref="deptForm" :model="form" :rules="rules" label-width="120px">
    <el-form-item label="部门名称" prop="name">
      <el-input v-model="form.name" style="width:80%" placeholder="1-50个字符" />
    </el-form-item>
    <el-form-item label="部门编码" prop="code">
      <el-input v-model="form.code" style="width:80%" placeholder="1-50个字符" />
    </el-form-item>
    <el-form-item label="部门负责人" prop="manager">
      <el-select v-model="form.manager" style="width:80%" placeholder="请选择">
        <el-option v-for="item in list" :key="item.id" :value="item.username" :label="item.username" />

      </el-select>
    </el-form-item>
    <el-form-item label="部门介绍" prop="introduce">
      <el-input v-model="form.introduce" style="width:80%" placeholder="1-300个字符" type="textarea" :rows="3" />
    </el-form-item>
    <el-form-item>
      <el-button type="primary" size="small" @click="hSubmit">确定</el-button>
      <el-button size="small" @click="hCancel">取消</el-button>
    </el-form-item>
  </el-form>

</template>
<script>
import { getEmployeesSimple } from '@/api/employees'
import { addDepartments, getDepartmentDetail, updateDepartments } from '@/api/departments'

export default {
  props: {
    id: {
      type: String,
      required: true
    },
    isEdit: {
      type: Boolean,
      required: true
    },
    originList: {
      type: Array,
      required: true
    }
  },
  data() {
    // 校验编码在项目中是否重复
    const validCode = (rule, value, callback) => {
      // 如果当前输入编码在this.originList已经存在,提示用户重新输入
      let existCodeList = this.originList.map(item => item.code)
      console.log('existCodeList', existCodeList)
      // 如果是编辑状态的话,需要把当前部门的编码从已经存在的数组中移除
      if (this.isEdit) {
        existCodeList = this.originList.filter(item => item.id !== this.id).map(item => item.code)
      }
      if (existCodeList.includes(value)) {
        // 存在
        callback(new Error(`该部门编码:${value}已经存在,请重新输入`))
      } else {
        callback()
      }
    }

    // 校验部门名称在同级部门中不能重复
    const validName = (rule, value, callback) => {
      // 找到当前点击部门的子部门
      let existNameList = this.originList.filter(item => item.pid === this.id).map(item => item.name)
      if (this.isEdit) {
        // 获取当前部门的pid
        const pid = this.originList.find(item => item.id === this.id).pid
        // 获取被占用的列表名称
        existNameList = this.originList.filter(item => item.pid === pid).filter(item => item.id !== this.id).map(item => item.name)
      }
      console.log('existNameList', existNameList)
      // 判断当前用户输入的部门名称是否在已经存在数组
      if (existNameList.includes(value)) {
        // 存在
        callback(new Error(`该部门名称:${value}已经存在,请重新输入`))
      } else {
        callback()
      }
    }

    return {
      form: {
        name: '', // 部门名称
        code: '', // 部门编码
        manager: '', // 部门管理者
        introduce: '' // 部门介绍
      },
      rules: {
        name: [
          { required: true, message: '请输入部门的名称', trigger: 'blur' },
          { min: 1, max: 15, message: '请输入长度是1~15的部门名称', trigger: 'blur' },
          { validator: validName, trigger: 'blur' }
        ],
        code: [
          { required: true, message: '请输入部门的编码', trigger: 'blur' },
          { min: 1, max: 15, message: '请输入长度是1~15的部门编码', trigger: 'blur' },
          { validator: validCode, trigger: 'blur' }
        ],
        manager: [
          { required: true, message: '请输入部门的负责人', trigger: 'blur' }
        ],
        introduce: [
          { required: true, message: '请输入部门的介绍', trigger: 'blur' },
          { min: 1, max: 300, message: '请输入长度是1~300的部门介绍', trigger: 'blur' }
        ]
      },
      list: []
    }
  },
  // watch 解决数据不更新的方式3
  // watch: {
  //   // 可以侦听 props中的属性或者data函数中的属性
  //   // id: function(new_value, old_value) {
  //   //   console.log('new_value', new_value)
  //   //   console.log('old_value', old_value)
  //   //   this.loadDepartmentDetail()
  //   // }
  //   id: {
  //     handler:function(new_value, old_value) {
  //       console.log('new_value', new_value)
  //       console.log('old_value', old_value)
  //       this.loadDepartmentDetail()dept
  //     }
  //     // immediate:true //页面一加载就执行一次
  //   }
  // },
  created() {
    this.loadEmployeesSimple()
    // 如果是编辑状态,才会触发函数实现编辑
    if (this.isEdit) {
      this.loadDepartmentDetail()
    }
  },
  methods: {
    // 重置表单
    resetForm() {
      this.$refs.deptForm.resetFields()
    },
    // 获取部门详情数据
    async loadDepartmentDetail() {
      try {
        const res = await getDepartmentDetail(this.id)
        console.log('res', res)
        if (res.code === 10000) {
          // 将获取到的部门详情数据填充到表单
          this.form = res.data
        }
      } catch (error) {
        console.log(error)
      }
    },
    // 加载部门负责人信息
    async loadEmployeesSimple() {
      try {
        const res = await getEmployeesSimple()
        console.log('res', res)
        this.list = res.data
      } catch (error) {
        console.log(error)
      }
    },
    // 新增子部门
    async doAdd() {
      try {
        // 缺少pid 父级部门的id
        const res = await addDepartments({ pid: this.id, ...this.form })
        console.log('res', res)
        if (res.code !== 10000) return this.$message.error(res.message)
        this.$message.success(res.message)
        // 从新渲染页面
        // 关闭弹层
        this.$emit('success')
      } catch (error) {
        console.log(error)
      }
    },
    // 实现编辑部门
    async doEdit() {
      try {
        const res = await updateDepartments(this.form)
        if (res.code !== 10000) return this.$message.error(res.message)
        this.$message.success(res.message)
        // 从新渲染页面
        // 关闭弹层
        this.$emit('success')
      } catch (error) {
        console.log(error)
      }
    },
    // 确定
    hSubmit() {
      // 兜底校验
      this.$refs.deptForm.validate((valid) => {
        if (!valid) return
        this.isEdit ? this.doEdit() : this.doAdd()
      })
    },
    // 取消
    hCancel() {
      // 子传父,关闭弹层
      this.$emit('close')
    }
  }

}
</script>
<style lang="">

</style>
